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authorMadhuparna Bhowmik <madhuparnabhowmik10@gmail.com>2020-04-09 13:59:06 +0530
committerJohannes Berg <johannes.berg@intel.com>2020-04-24 11:31:20 +0200
commit8ca47eb9f9e4e10e7e7fa695731a88941732c38d (patch)
treed7ef27ab20d288e126be9cec3cafb816569ae223
parent6cb5f3ea4654faf8c28b901266e960b1a4787b26 (diff)
mac80211: sta_info: Add lockdep condition for RCU list usage
The function sta_info_get_by_idx() uses RCU list primitive. It is called with local->sta_mtx held from mac80211/cfg.c. Add lockdep expression to avoid any false positive RCU list warnings. Signed-off-by: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com> Link: https://lore.kernel.org/r/20200409082906.27427-1-madhuparnabhowmik10@gmail.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
-rw-r--r--net/mac80211/sta_info.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index f8d5c2515829..cd8487bc6fc2 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -231,7 +231,8 @@ struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata,
struct sta_info *sta;
int i = 0;
- list_for_each_entry_rcu(sta, &local->sta_list, list) {
+ list_for_each_entry_rcu(sta, &local->sta_list, list,
+ lockdep_is_held(&local->sta_mtx)) {
if (sdata != sta->sdata)
continue;
if (i < idx) {